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Updated: May 14, 2026
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Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
Published on: March 12, 2019
A Miniaturized Multi-Parameter Synchronous Observation System for In Situ Ocean Turbulence Measurement
Weihong Ouyang1, Zengxing Zhang1, Junmin Jing1
1Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China.
Sensors (Basel, Switzerland)
|May 13, 2026
Summary
A new miniaturized system accurately measures ocean turbulence and related parameters in situ. It successfully captured thermoclines and internal waves, revealing enhanced turbulence near the thermocline.
Area of Science:
- Oceanography
- Fluid Dynamics
- Sensor Technology
Background:
- Ocean turbulence is crucial for mixing and energy transfer.
- In situ measurements are vital for understanding ocean dynamics.
- Existing systems may lack miniaturization or multi-parameter capabilities.
Purpose of the Study:
- To develop a miniaturized, multi-parameter system for synchronous in situ ocean turbulence measurement.
- To validate the system's accuracy and reliability in deep-sea conditions.
- To investigate ocean turbulence characteristics and their relationship with water masses.
Main Methods:
- Integration of micro-electromechanical system (MEMS)-based 2D turbulence sensors with pressure, temperature, conductivity, and attitude sensors.
- Deployment of the system at 1800 m depth in the northern South China Sea.
- Validation using standard CTD sensors, dual-probe consistency analysis, and Nasmyth spectrum fitting.
Main Results:
- The system accurately captured thermoclines, internal waves, and turbulent shear fluctuations at ~125 m depth.
- Enhanced turbulence was observed near the thermocline, linked to intensified shear effects.
- Field tests confirmed the system's high spatiotemporal synchronization and reliability.
Conclusions:
- The developed miniaturized system is an effective tool for in situ ocean turbulence measurement.
- It provides valuable data for studying multiscale ocean turbulence and associated dynamic processes.
- The findings contribute to a better understanding of ocean mixing and energy transfer.
